linux-kernel - Re: [PATCH 2/7] mm: compaction: Use synchronous compaction for /proc/sys/vm/compact

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Message-ID: <20111122170037.GB15253@barrios-laptop.redhat.com>
Date:	Wed, 23 Nov 2011 02:00:37 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Mel Gorman <mgorman@...e.de>
Cc:	Linux-MM <linux-mm@...ck.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Jan Kara <jack@...e.cz>, Andy Isaacson <adi@...apodia.org>,
	Johannes Weiner <jweiner@...hat.com>,
	Rik van Riel <riel@...hat.com>, Nai Xia <nai.xia@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] mm: compaction: Use synchronous compaction for
 /proc/sys/vm/compact_memory

On Mon, Nov 21, 2011 at 06:36:43PM +0000, Mel Gorman wrote:
> When asynchronous compaction was introduced, the
> /proc/sys/vm/compact_memory handler should have been updated to always
> use synchronous compaction. This did not happen so this patch addresses
> it. The assumption is if a user writes to /proc/sys/vm/compact_memory,
> they are willing for that process to stall.
> 
> Signed-off-by: Mel Gorman <mgorman@...e.de>
> Reviewed-by: Andrea Arcangeli <aarcange@...hat.com>
Reviewed-by: Minchan Kim <minchan.kim@...il.com>

-- 
Kind regards,
Minchan Kim
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